c_gtk_menu_popup_at_widget

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
__gshared extern (C)
void function(GtkMenu* menu, GtkWidget* widget, GdkGravity widgetAnchor, GdkGravity menuAnchor, GdkEvent* triggerEvent) c_gtk_menu_popup_at_widget;

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